I agree with you here. I think that music is a great training aid. It can help you keep pushing when you want to stop. It can also take your mind away from the pain. The point of training is to be over prepared for an altercation. If I train light, I fight light. If I train hard, I fight hard. There is no way to accurately simulate a real self-defence situtation on a training floor. You partner(s) are not actually going to hurt you.
I also know about the sensory overload. I hear people, but it does not compute. It just falls into the background noise.
In training, music is helpful. In a fight, it is irrelevant.
